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水稻矮缩病毒非结构蛋白Pns6在病毒复制中的功能 被引量:1
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作者 陈倩 张玲华 +2 位作者 黄海宁 魏太云 谢联辉 《中国科技论文》 CAS 北大核心 2015年第24期2840-2846,共7页
水稻矮缩病毒(rice dwarf virus,RDV)主要由黑尾叶蝉以持久增殖型方式传播。RDV编码的3个非结构蛋白Pns6、Pns11和Pns12是病毒在介体细胞内侵染过程中形成提供病毒复制和子代病毒粒体装配的唯一场所——病毒原质(viroplasm)的主要成分... 水稻矮缩病毒(rice dwarf virus,RDV)主要由黑尾叶蝉以持久增殖型方式传播。RDV编码的3个非结构蛋白Pns6、Pns11和Pns12是病毒在介体细胞内侵染过程中形成提供病毒复制和子代病毒粒体装配的唯一场所——病毒原质(viroplasm)的主要成分。利用黑尾叶蝉培养细胞和RNA干扰(RNA interference,RNAi)体系,研究Pns6在病毒侵染介体昆虫过程中的功能。结果显示,将体外合成靶向Pns6基因的dsRNA转染黑尾叶蝉培养细胞后,Pns6合成显著降低,viroplasm的形成和病毒的侵染也受到抑制。用显微注射技术导入到黑尾叶蝉的靶向Pns6基因的dsRNA,同样抑制viroplasm的形成和病毒的侵染,最终阻碍病毒在介体体内的有效扩散。这些研究明确了Pns6在病毒侵染黑尾叶蝉过程中的功能,Pns6是RDV的复制关键因子。 展开更多
关键词 水稻矮缩病毒 叶蝉 病毒原质 Pns6 复制 RNAI
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Synergistic effect of a novel oxymatrine-baicalin combination against hepatitis B virus replication, a smooth muscle actin expression and typeⅠcollagen synthesis in vitro 被引量:33
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作者 Yang Cheng Jian Ping +2 位作者 Huai-Dong Xu Hai-Jun Fu Zhao-Hui Zhou 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第32期5153-5159,共7页
AIM: To study the effect of oxymatrine-baicalin combination (OB) against HBV replication in 2.2.15 cells and α smooth muscle actin ( α SMA) expression, type I, collagen synthesis in HSC-T6 cells. METHODS: The ... AIM: To study the effect of oxymatrine-baicalin combination (OB) against HBV replication in 2.2.15 cells and α smooth muscle actin ( α SMA) expression, type I, collagen synthesis in HSC-T6 cells. METHODS: The 2.2.15 cells and HSC-T6 cells were cultured and treated respectively. HBsAg and HBeAg in the culture supernatants were detected by ELISA and HBV DNA levels were determined by fluorescence quantitative PCR. Total RNA was extracted from HSC-T6 cells and reverse transcribed into cDNA. The cDNAs were amplified by PCR and the quantities were expressed in proportion to β actin. The total cellular proteins extracted from HSC-T6 cells were separated by electrophoresis. Resolved proteins were electrophoretically transferred to nitrocellulose membrane. Protein bands were revealed and the quantities were corrected by β actin. RESULTS: In the 2.2.15 cell culture system, the inhibitory rate against secretion of HBsAg and HBeAg in the OB group was significantly stronger than that in the oxymatrine group (HBsAg, P = 0.043; HBeAg, P = 0.026; respectively); HBV DNA level in the OB group was significantly lower than that in the oxymatrine group (P = 0.041). In HSC-T6 cells the mRNA and protein expression levels of α SMA in the OB group were significantly lower as compared with those in the oxymatrine group (mRNA, P = 0.013; protein, P = 0.042; respectively); The mRNA and protein expression levels of type I collagen in the OB group were significantly lower as compared with those in the oxymatrine group (mRNA, P 〈 0.01; protein, P 〈 0.01; respectively).CONCLUSION: OB combination has a better effect against HBV replication in 2.2.15 cells and is more effective against α SMA expression and type I collagen synthesis in HSC-T6 cells than oxymatrine in vitro. 展开更多
关键词 2.2.15 cells HSC-T6 cells OXYMATRINE BAICALIN Hepatitis B virus α smooth muscle actin TypeI collagen
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